Fix stopping export from error on DevOps & Try/Catch Expanded

[FabienTschanz]

Pull Request (PR) description

This PR fixes an issue on Azure DevOps & GitHub Pipelines where an export would stop if a resource threw an error. All subsequent resources won't be processed and the execution is aborted. This is because the default $ErrorActionPreference is set to Stop on these pipelines.

The behavior of Export-M365DSCConfiguration was updated to set the preference to Continue if it was not specified with the -ErrorAction parameter.

Additionally, it expands the try/catch in the Get-TargetResource function for two resources.

This Pull Request (PR) fixes the following issues

• Fixes Cannot use M365DSC anymore #6862
• Fixes O365SearchAndIntelligenceConfigurations: False Drift Detection #6788

Task list

• Added an entry to the change log under the Unreleased section of the file CHANGELOG.md.
  Entry should say what was changed and how that affects users (if applicable), and
  reference the issue being resolved (if applicable).
• Resource parameter descriptions added/updated in the schema.mof.
• Resource documentation added/updated in README.md.
• Resource settings.json file contains all required permissions.
• Examples appropriately added/updated.
• Unit tests added/updated.
• New/changed code adheres to DSC Community Style Guidelines.